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Hikaru Kobayashi

Section

Graduate School of Engineering

Job title

Professor

Degree

博士（工学）（東京大学）
修士（工学）（東京大学）

researchmap

https://researchmap.jp/19680829

J-GLOBAL ID

201301071683875142

Research History 4

2006/07 - 2013/03

大成建設株式会社設計本部　シニア・エンジニア
2002/07 - 2006/06

大成建設株式会社設計本部　エンジニア
1999/04 - 2002/06

大成建設株式会社設計本部　主任
1996/04 - 1999/03

大成建設株式会社設計本部

Education 2

The University of Tokyo　Graduate School, Division of Engineering

1992/04 - 1996/03
Tohoku University　Faculty of Engineering　建築学科

1987/04 - 1991/03

Committee Memberships 10

空気調和衛生工学会東北支部　支部長

2021/05 - Present
建築設備技術者協会東北支部　支部役員

2014/04 - Present
空気調和衛生工学会東北支部運営委員会　運営委員

2013/04 - Present
日本建築学会東北支部環境工学部会　部会長

2015/04 - 2019/03
日本建築学会会誌編集委員会　委員

2015/08 - 2017/07
空気調和衛生工学会東北支部学術・技術報告会組織委員会　委員長

2015/04 - 2017/03
日本建築学会・放射線防護のための都市・住まいの手引き作成ＷＧ　委員

2014/09 - 2016/09
日本建築学会東北支部　常議員

2014/04 - 2016/03
日本建築学会東北支部　協力委員

2014/04 - 2016/03
空気調和衛生工学会東北支部学術・技術報告会組織委員会　組織委員

2013/04 - 2014/03

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Professional Memberships 3

建築設備技術者協会
The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan
Architectural Institute of Japan

Research Interests 1

Built Environment Engineering

Research Areas 1

Social infrastructure (civil Engineering, architecture, disaster prevention) / Construction environment and equipment /

Awards 9

第42回東北建築賞

2022/03　日本建築学会東北支部　副都心下の受光する住器
令和2年度学会賞デザイン賞

2021/05　日本風工学会　大きな地形を背負う環境住宅
第21回JIA環境建築賞優秀賞

2020/12　日本建築家協会　大きな地形を背負う環境住宅
18th Environmental and Equipment Design Award

2020/05
17th Housing Environmental Equipment Promotion Award

2020/03　The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan
GOOD DESIGN賞2018

2018/10　日本グッドデザイン振興会　CLTモデル実証棟
JAPAN WOOD DESIGN AWARD 2018 建築空間分野入賞

2018　ウッドデザイン賞運営事務局　東北大学建築 CLTモデル実証棟
空気調和・衛生工学会論文賞学術論文部門

2000/05　空気調和・衛生工学会　不完全混合室内における換気効率・温熱環境形成効率評価指標に関する研究
空気調和・衛生工学会論文賞学術論文部門

1998/05　空気調和・衛生工学会　対流場、放射場の連成シミュレーションによる冷房室内の温熱環境解析

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Papers 55

Estimation of Longwave Radiation Intensity Emitted from Urban Obstacles in Each Direction Using Drone-Based Photogrammetry Peer-reviewed

Yasuyuki Ishida, Mamiko Fujiyama, Hikaru Kobayashi

Remote Sensing　16　(21)　4017　2024/10/29

DOI： 10.3390/rs16214017 　
Impacts of vertical variations in soil properties on H*(10) simulations for 137Cs deposition Peer-reviewed

Xibo Ma, Hikaru Kobayashi

Journal of Environmental Radioactivity　279　107524　2024/10

DOI： 10.1016/j.jenvrad.2024.107524 　
What if the urban car parks become the urban farms - A case study of daylight availability in Singapore Peer-reviewed

Farah Nadhirah, Binte Sazali, Szu-Cheng Chien, Mamiko Fujiyama, Hikaru Kobayashi, Toshikazu Ishida, Chew Beng Soh

Proceedings of The 15th Asia Lighting Conference 2024(ALC)　2024/09
Solar regenerated daily cycle passive dehumidifying Air-conditioner: Storing drying potential in solid desiccant through daily weather cycles Peer-reviewed

Adam Bin M Raman, Hikaru Kobayashi

Proceeding of the 14th International Symposium on Architectural Interchange in Asia　2024/09
A Study of Glare Perception Considering Light Color in Daylight Utilized Office Spaces Peer-reviewed

Yuji Zhu, Hikaru Kobayashi

Proceeding of the 14th International Symposium on Architectural Interchange in Asia　2024/09
Quantifying the electricity demand characteristics of university buildings for a grid-interactive campus Peer-reviewed

Zhongqing Yang, Hikaru Kobayashi

Proceeding of the 14th International Symposium on Architectural Interchange in Asia　2024/09
A Study on the Application and Evaluation of the Urban Agricultural building module UaAm in Compact Green Urbanism-Oriented Cities Peer-reviewed

Mamiko Fujiyama, Szu Cheng Chien, Hikaru Kobayashi, Chew Beng Soh, Toshikazu Ishida

Proceeding of the 14th International Symposium on Architectural Interchange in Asia　2024/09
MEASUREMENTS OF INDOOR THERMAL AND AIR ENVIRONMENT IN ELEMENTARY AND JUNIOR HIGH SCHOOL CLASSROOMS IN SENDAI UNDER COVID-19 PANDEMIC Peer-reviewed

高木理恵, 後藤伴延, 菅原正則, 小林光

日本建築学会技術報告集　30　(74)　193-198　2024/02

DOI： 10.3130/aijt.30.193 　

ISSN： 1881-8188
Assessment of cooling effect of sea breeze under future climate based on analysis of heat balance mechanism of urban space Peer-reviewed

Miguel Yamamoto, Yasuyuki Ishida, Akashi Mochida, Hikaru Kobayashi, Hironori Watanabe, Kyohei Abe, Shuhei Fujita

Building and Environment　253　111296　2024/02
Publisher: Elsevier BV
DOI： 10.1016/j.buildenv.2024.111296 　

ISSN： 0360-1323
Estimation of long-wave radiation emitted in each direction from a small building using drone-based photogrammetry Peer-reviewed

Yasuyuki Ishida, Hikaru Kobayashi, Mamiko Fujiyama, Akashi Mochida

Proceedings of 11th International Conference on Urban Climate（ICUC11)　2023/09
A study of daylight utilization in office spaces considering occupants' adaptation to changes in glare perception depending on their behavior and light color Peer-reviewed

Kawaguchi A., Zhu Y., Kobayashi H.

Proceedings of the 14th Asia Lighting Conference (ALC)　117-124　2023/08
Field study of system efficiency of detached house with solar energy system and fuel cell cogeneration system in Japan

Rie Takaki, Hiroshi Yoshino, Hikaru Kobayashi, Akira Satake, Toshiki Hanabusa, Kenichi Konno, Kimio Takahashi

E3S Web of Conferences　396　03029-03029　2023/06/16
Publisher: EDP Sciences
DOI： 10.1051/e3sconf/202339603029 　

eISSN： 2267-1242

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In this study, the energy flow in detached houses in Sendai City in the Tohoku region of Japan where photovoltaic power generation system, solar thermal collection system, and fuel cell cogeneration system were installed was analyzed based on measured data. Hot water obtained by solar heat collected in the house is used to supply hot water to the kitchen throughout the year, to supply hot water to floor heating and to preheat the air supply of the HVAC system in winter, and to regenerate the desiccant wheel of the HVAC system in summer. A hybrid hot water supply system using city gas and a heat pump is used as an auxiliary heat source for a solar thermal system. As a result, the monthly energy self-sufficiency rate, energy efficiency and heat loss rate of the house for three years were calculated, and the necessity of the optimization of the operation method of the solar thermal system was found. In addition, daily analyses of solar thermal system in winter and summer suggested the importance of the operation corresponding to the weather.
A new contribution ratio for indoor climate (CRI_SE) for the contribution evaluation of each heat and moisture source to the specific enthalpy in a closed space

Hana Suda, Hikaru Kobayashi, Gaito Mori

E3S Web of Conferences　396　03022-03022　2023/06/16
Publisher: EDP Sciences
DOI： 10.1051/e3sconf/202339603022 　

eISSN： 2267-1242

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The indoor thermal environment comprises temperature, humidity, wind velocity, and radiant temperature. The spatial distribution of these elements is a combination of the individual responses of the heat and water vapor transported into the space from each source. The contribution ratio for indoor climate (CRI) proposed by Kato, Kobayashi, and Murakami is a single index that evaluates the effect of each heat source on the temperature by breaking down the temperature increase at position x in a room into the effect of each heat source. We extended the CRI concept to three single indices to improve its applicability. Previously, thermal environment evaluation was often performed using a composite index rather than a single index. To evaluate the combined effects of heat and moisture sources, decomposing multiple elements individually and then combining them is desirable. In this study, we propose CRISE to evaluate the contribution of a heat or moisture source to the specific enthalpy at a given point in a closed space. The index was calculated by combining a single index of dry-bulb temperature and absolute humidity. The CRISE is a useful index for evaluating the indoor thermal environment and HVAC load.
DEVELOPMENET OF RAPID-ESTIMATION METHOD FOR LONG-WAVE RADIATION DISTRIBUTION WITHIN URBAN SPACE Peer-reviewed

29　(72)　898-903　2023/06

DOI： 10.3130/aijt.29.898 　
Evaluation of indoor air dose rate based on Cs‐137 depth distribution in surrounding artificially paved surfaces surveyed 10 years after the Fukushima Daiichi nuclear power plant accident Peer-reviewed

Hikaru Kobayashi, Masahito Suto, Kentaro Otsuki, Kazuya Yoshimura, Hiroko Yoshida

JAPAN ARCHITECTURAL REVIEW　6　(1)　2023/01
Publisher: Wiley
DOI： 10.1002/2475-8876.12353 　

ISSN： 2475-8876

eISSN： 2475-8876

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Abstract Understanding residual radioactive contamination state and the resulting radiation environment is vital before reconstructing the lives of residents in areas affected by nuclear power plant accidents. In this study, we surveyed the depth profiles of Cs‐137 in three artificially paved ground surfaces: impermeable asphalt, permeable asphalt, and concrete, in areas affected by the Fukushima Daiichi Nuclear Power Plant accident after a period of 10 years and analyzed the gamma‐ray air dose rate distribution in a two‐story wooden house model surrounded by different ground surfaces using the Particle and Heavy Ion Transport code System of the Japan Atomic Energy Agency. The air dose rate distribution tendencies within the building for different surrounding ground surfaces were clarified by analyzing the transport of gamma rays emitted from the Cs‐137 in the ground. Moreover, the shielding effect of an ordinal concrete fence on the indoor air dose rate was analyzed. The analysis showed that the indoor air dose rate was higher in an environment with artificial pavement than in that with a soil surface, and even a simple measure, such as installing an ordinal concrete fence, could significantly reduce indoor radiation dose rates.
Urban-Metabolic Farming Modules on Rooftops for Eco-Resilient Farmscape Peer-reviewed

Youhanna E. William, Hui An, Szu Cheng Chien, Chew Beng Soh, Barbara Ting Wei Ang, Toshikazu Ishida, Hikaru Kobayashi, David Tan, Ryan Hong Soon Tay

Sustainability (Switzerland)　14　(24)　2022/12

DOI： 10.3390/su142416885 　

eISSN： 2071-1050
Stationary dielectric daylighting louver based on concept of Köhler integrator Peer-reviewed

Hikaru Kobayashi, Kodai Kawagishi, Keisuke Arata

Solar Energy　241　361-371　2022/07/15

DOI： 10.1016/j.solener.2022.06.002 　

ISSN： 0038-092X
Dispersion characteristics of oral microbial communities in a built environment Peer-reviewed

U Yanagi, Shinsuke Kato, Hideaki Nagano, Kazuhide Ito, Toshio Yamanaka, Yoshihisa Momoi, Hikaru Kobayashi, Hirofumi Hayama

JAPAN ARCHITECTURAL REVIEW　5　(2)　225-232　2022/04
Publisher: Wiley
DOI： 10.1002/2475-8876.12261 　

ISSN： 2475-8876

eISSN： 2475-8876
QUANTIFICATION OF THE EFFECTS OF MEASURES AGAINST HOT OUTDOOR ENVIRONMENT ON ADAPTATION TO URBAN WARMING, MITIGATION OF HEAT ISLAND PHENOMENA, AND MITIGATION OF GLOBAL WARMING Peer-reviewed

Saori YUMINO, Yasuyuki ISHIDA, Yusaku OHBA, Taiki UCHIDA, Hikaru KOBAYASHI, Akashi MOCHIDA

Journal of Environmental Engineering (Transactions of AIJ)　87　(794)　271-281　2022/04/01
Publisher: Architectural Institute of Japan
DOI： 10.3130/aije.87.271 　

ISSN： 1348-0685

eISSN： 1881-817X
Proposal of Contribution Ratio for Indoor-climate System CRI (S) to Analyze Temperature Transportation in Indoor Air and the Interior of a Building Structure Peer-reviewed

Hikaru Kobayashi, Koki Syamoto

287　13-19　2021/02
DEVELOPMENT OF DIRECTIONAL GAMMA RAY MEASURING INSTRUMENT FOR EVALUATING RADIATION INCIDENT ON ARCHITECTURAL SPACE Peer-reviewed

Hikaru Kobayashi, Ryo Yamamori, Shusaku Nakajima, Yusuke Ichijo, Hiroko Yoshida, Atsuo Nozaki, Hiroshi Yoshino

Journal of Environmental Engineering (Japan)　84　(764)　967-973　2019/10

DOI： 10.3130/aije.84.967 　

ISSN： 1348-0685

eISSN： 1881-817X
A RESEARCH STUDY ON THE SPATIAL RADIATION AIR DOSE RATE AT A WOODEN HOUSE IN KORIYAMA Peer-reviewed

Hikaru Kobayashi

AIJ Journal of Technology and Design　25　(60)　777-781　2019/06/20

DOI： 10.3130/aijt.25.777 　

ISSN： 1341-9463 1881-8188
A RESEARCH STUDY ON INDOOR SPATIAL RADIATION DOSE RATE OF A WOODEN DETACHED HOUSE BEFORE AND AFTER THE DECONTAMINATION WORK IN NUCLEAR POWER PLANT ACCIDENT AREA Peer-reviewed

KOBAYASHI Hikaru, ICHIJO Yusuke, NOZAKI Atsuo, NISHINA Hisato, NARITA Yasunori, GOTO Tomonobu, YOSHINO Hiroshi

AIJ Journal of Technology and Design　25　(60)　789-793　2019/06
Publisher: Architectural Institute of Japan
DOI： 10.3130/aijt.25.789 　

ISSN： 1341-9463

eISSN： 1881-8188

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This study explored changes in spatial radiation dose rate both indoor and outdoor associated with a decontamination operation for a wooden house in a high dose rate region in Fukushima. As a result, the averaged spatial dose rate at 1m height from the floor before the decontamination was 1.73μSv/h and the dose rate after the decontamination was 0.86μSv/h. Furthermore, the results of a comparison of the dose rate between pre- and post-decontamination indicates a decrease in the dose rate at almost all points. The reduction rate of spatial dose-rate was 40 to 50% at the center of the house.
STUDY ON ENERGY ZERO BALANCE BASED LIGHTING SYSTEM IN TOILET Peer-reviewed

Hisashi ISHII, Mamiko FUJIYAMA, Hikaru KOBAYASHI, Toshikazu ISHIDA

Journal of Environmental Engineering (Transactions of AIJ)　84　(757)　345-355　2019/03
Publisher: Architectural Institute of Japan
DOI： 10.3130/aije.84.345 　

ISSN： 1348-0685

eISSN： 1881-817X
OPTIMIZATION OF DESICCANT ELEMENT AND ENERGIZATION CONTROL IN ENERGIZATION-REGENERATION TYPE DESICCANT AIR CONDITIONING Peer-reviewed

Hikaru Kobayashi

Journal of Environmental Engineering (Transactions of AIJ)　84　(757)　263-269　2019/03

DOI： 10.3130/aije.84.263 　

ISSN： 1348-0685 1881-817X
Detailed measurement of indoor γ ray dose rate distribution and directional radiation in detached house in Fukushima Peer-reviewed

Hikaru Kobayashi, Shusaku Nakajima, Yusuke Ichijo, Hiroshi Yoshino

Proceedings of 8th ICEERB Housing Sustainability in Urban Areas 2018　2018/11
DEVELOPMENT OF DESICCANT AIR CONDITIONING SYSTEM OF ENERGIZATION-REGENERATION TYPE USING CONDUCTIVE POLYMER (PEDOT/PSS) Peer-reviewed

Hikaru Kobayashi

Journal of Environmental Engineering (Transactions of AIJ)　83　(749)　589-595　2018/07

DOI： 10.3130/aije.83.589 　

ISSN： 1348-0685 1881-817X
Development of transparent nonimaging daylighting device using refraction and total reflection Peer-reviewed

Marina Konta, Hikaru Kobayashi

Journal of Environmental Engineering (Japan)　83　(747)　435-441　2018/05/01
Publisher: Architectural Institute of Japan
DOI： 10.3130/aije.83.435 　

ISSN： 1881-817X 1348-0685
Investigation of the Effects of Radioactive Nuclides Deposited on the Soil in the River Area on the Surrounding Environment of the Building Peer-reviewed

Shohei Honta, Hikaru Kobayashi, Yusuke Ichijo, Ryo Yamamori, Takahiro Tsuchiya, Yasunori Narita, Atsuo Nozaki, Hiroshi Yoshino

Japanese Journal of Clinical Ecology　26　(2)　69-75　2018/03
建築物における空間放射線量率の分布性状と低減対策に関する研究 Peer-reviewed

野﨑淳夫, 一條佑介, 小林光, 成田泰章, 吉野博

住総研研究論文集　43　47-56　2017

DOI： 10.20803/jusokenronbun.43.0_47 　

ISSN： 2187-8188 2423-9895
Development of Fixed Daylighting System Consisting of Two Types of Non-Imaging Lighting Devices Peer-reviewed

Hikaru Kobayashi, Yuki Shibuya, Katsuhito Sasaki

Proceedings of the 11th ISAIA　2016/09
Study on zero energy lighting system for toilet under the emergency situation - Verification experiment at demonstration site in tohoku university Peer-reviewed

Mamiko Fujiyama, Toshikazu Ishida, Hikaru Kobayashi, Hisashi Ishi

AIJ Journal of Technology and Design　22　(50)　281-284　2016/02/01
Publisher: Architectural Institute of Japan
DOI： 10.3130/aijt.22.281 　

ISSN： 1881-8188 1341-9463
Total assessment for various environmentally conscious techniques from three perspectives: Mitigation of global warming, mitigation of UHIs, and adaptation to urban warming Peer-reviewed

Saori Yumino, Taiki Uchida, Kiyoshi Sasaki, Hikaru Kobayashi, Akashi Mochida

SUSTAINABLE CITIES AND SOCIETY　19　(19)　236-249　2015/12

DOI： 10.1016/j.scs.2015.05.010 　

ISSN： 2210-6715
Performance Assessment of Energy Recovery Ventilator Integrated CO_2 Demand Controlled System : Part 1-Field Measurements of Energy Recovery by ERV under Summer Conditions Peer-reviewed

亀石圭司, 戸田悠太, 小林光, 伊藤一秀

空気調和・衛生工学会論文集　40　(216)　1-9　2015
Publisher: The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan
DOI： 10.18948/shase.40.216_1 　

ISSN： 0385-275X

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The ventilation load from the outdoor air intake is a dominant heating/cooling load in buildings. Increasing the ventilation rate plays an important role in decreasing the percentage of subjects dissatisfied with the IAQ and improving workplace productivity. In order to optimize the ventilation rate, the energy recovery ventilator (ERV) integrated CO_2 demand controlled algorithm is an effective measure in indoor environmental design. The overarching objective of this study was to develop an optimized ERV with a CO_2 demand controlled algorithm. The residual lifetime of CO_2 generated at a local point in the office space was measured to examine and improve the feedback algorithm for CO_2 sensing at the local point and adjustment of the ventilation rate. In Part 1 of this research project, we conducted long-term field measurements in a university office space having ERVs installed with CO_2 demand controlled systems under summer conditions. Two types of CO_2DCV algorithms were adopted: a multistage CO_2 concentration threshold setting method that adjusts the ventilation rate in a stepwise manner, and consecutive/sequential control of the ventilation rate according to the time-dependent CO_2 concentrations. During the field measurements in 2013FY, a sequential optimization procedure of ventilation rate using an inverter system was introduced into the ERV with CO_2DCV, and a significant reduction in the outdoor intake and electricity consumption was confirmed.
Performance Assessment of Energy Recovery Ventilator Integrated CO_2 Demand Controlled System : Part 2-Field Measurements on the Energy Recovery by ERV under Winter Conditions Peer-reviewed

亀石圭司, 戸田悠太, 小林光, 伊藤一秀

空気調和・衛生工学会論文集　(220)　1-10　2015

DOI： 10.18948/shase.40.220_1 　

ISSN： 0385-275X 2424-0486
Evaluation of greening and highly reflective materials from threeperspectives. Peer-reviewed

Saori Yumino, Taiki Uchida, Akashi Mochida, Hikaru Kobayashi, Kiyoshi Sasaki

Proceedings of the 9th International Conference on Urban Climate　2015
Comprehensive assessment on urban planning and building design tomitigate climate change and adapt to urban warming. Peer-reviewed

Akashi Mochida, Saori Yumino, Taiki Uchida, Hikaru Kobayashi

Proceedings of World Engineering Conference and Convention　2015
Study on impact of greening and highly reflective materials on the outdoor thermal environment and cooling loads of buildings Peer-reviewed

Saori Yumino, Taiki Uchida, Akashi Mochida, Hikaru Kobayashi

Proceedings of 1st International Conference on Computational Engineering and Science for Safety and Environmental Problems　2014
Study on impact of greening and highly reflective materials on theoutdoor thermal environment and cooling loads of buildings. Peer-reviewed

Saori Yumino, Taiki Uchida, Akashi Mochida, Hikaru Kobayashi

Proceedings of 1st International Conference on Computational Engineering and Science for Safety and Environmental Problems　277-280　2014
Comprehensive assessment on the effects of the countermeasures to mitigate global warming, mitigate UHIs, and adapt to urban warming. Peer-reviewed

Kiyoshi Sasaki, Taiki Uchida, Saori Yumino, Akashi Mochida, Hikalu Kobayashi

Proceedings of 7th Japanese German Meeting on Urban Climatology　2014
往復二管式氷水搬送空調システムの開発 Peer-reviewed

小林光, 関根賢太郎, 米田弘和, 冨山靖司

空気調和・衛生工学会論文集　37　(186)　39-44　2012
Publisher: The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan
DOI： 10.18948/shase.37.186_39 　

ISSN： 2424-0486

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We have developed a two-pipe dynamic ice transportation system for building air-conditioning system. The system can transport ice slurries having ice packing factor (IPF) of over 10% in the piping system; this system have already been applied to two office buildings. In this paper, we outline the characteristics of the system and describe some important aspects to carry out ice slurry piping work successfully. We also report the results of basic experiments performed on branching ice slurry's IPF, which we could not determine from previous researches and the two buildings' HVAC system using ice slurry.
LONG-TERM INDOOR VOCs CONCENTRATION PREDICTION CONSIDERING TEMPERATURE CHANGES PART 1 DEVELOPMENT OF THE SIMPLIFIED PREDICTION MODEL VOCs EMISSION FROM BUILDING MATERIALS Peer-reviewed

Jun-ichi Fujimura, Hikaru Kobayashi, Hideki Ichihara, Maki Ichihara, Kiyoshi Hiwatashi

Proceedings of the 6th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings　413-420　2007
LONG-TERM INDOOR VOCs CONCENTRATION PREDICTION CONSIDERING TEMPERATURE CHANGES PART 2 COMPARISONS BETWEEN PREDICTION AND EXPERIMENTAL VALUES Peer-reviewed

Maki Ichihara, Jun-ichi Fujimura, Hideki Ichihara, Hikaru Kobayashi, Kiyoshi Hiwatashi

Proceedings of the 6th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings　421-428　2007
RADIATION DISTRIBUTION COEFFICIENT FOR THE USE OF CONTROL OF INDOOR THERMAL ENVIRONMENT Peer-reviewed

笹本太郎, 加藤信介, 村上周三, 小林光, 大森敏明

日本建築学会環境系論文集　70　(590)　23-27　2005
Publisher: Architectural Institute of Japan
DOI： 10.3130/aije.70.23_3 　

ISSN： 1348-0685

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The original definition of CRI_<(C)> estimates the room temperature distribution by taking account of only convection. In this paper, we propose the new concept of radiation distribution coefficient (CRI_<(R)>) to improve the original concept of CRI_<(C)>. We also demonstrate the effectiveness of the new concept of radiation distribution coefficient by applying it to an enclosed space with radiation and convection. The estimated result is compared with the result of the coupled simulation of CFD and radiation and the usefulness of CRI_<(R)> is confirmed.
Analysis on the Co-efficient of Performance of a Hybrid Energy Source System with Thermal Storage Peer-reviewed

髙橋淳一, 小林光, 近藤雅史, 岡建雄

空気調和・衛生工学会論文集　24　(74)　91-100　1999
Publisher: The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan
DOI： 10.18948/shase.24.74_91 　

ISSN： 0385-275X

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The purpose of this study is to understand the co-efficient of performance (COP) on the partial load of energy source equipments by the result of measurements of a middle scale office building with thermal storage tank. The result of air-conditioning load measurements indicates that the operating time at the partical load is very long. In order to reduce the energy consumption and running cost of the air-conditioning energy source systems, their systems should be selected with the hi-performance equipment not only on the peak load, but also on the partial load. This paper reports the measurement data of the COP of air source heat pump chiller-heater and gas fired absorption chiller-heater, and analyzed the relation with COP and effecting factors. This paper shows the formula of COP for the simulation, and confirms the correctness of this formula. And also this paper reports the heat loss ratio of thermal storage tank in a year.
Scales for Evaluating Ventilation Efficiency as Affected by Supply and Exhaust Openings Based on Spatial Distribution of Contaminant by Means of Numerical Simulation Peer-reviewed

Hikaru Kobayashi, Shinsuke Kato, Shuzo Murakami

空気調和・衛生工学会論文集　68　(68)　29-36　1998

DOI： 10.18948/shase.23.68_29 　
Scales for Assessing Contribution of Heat Sources and Sinks to Temperature Distributions in Room by Means of Numerical Simulation Peer-reviewed

Shinsuke Kato, Hikaru Kobayashi, Shuzo Murakami

空気調和・衛生工学会論文集　69　(68)　39-47　1998

DOI： 10.18948/shase.23.69_39 　

ISSN： 2424-0486
Dynamic SmagorinskyモデルへのLagrangian型安定化手法の導入とその効果 Dynamic LESによる２次元角柱周辺流れの解析（第３報） Peer-reviewed

飯塚悟, 村上周三, 持田灯, 富永禎秀, 小林光, K.D. Squires

日本建築学会計画系論文集　63　(511)　39-43　1998
Publisher: Architectural Institute of Japan
DOI： 10.3130/aija.63.39_5 　

ISSN： 1340-4210

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The lagrangian dynamic subgrid-scale (SGS) model proposed by Meneveau et al. (1994) was implemented and tested for a turbulent flowfield past a 2D square cylinder at Re=2.2×104. This model improves the usual type of dynamic Smagorinsky model by minimizing the error of the algebraic identity along fluid trajectories. This is realized numerically by solving two simple relaxation transport equations. It was confirmed that this model contributes to improvement of calculation stability and provides more accurate results than does the usual type of dynamic Smagorinsky model.
Smagorinsky SGSモデルにおける標準型とDynamic型の比較, Dynamic LESによる２次元角柱まわりの乱流渦放出流れの解析（第1報） Peer-reviewed

持田灯, 村上周三, 富永禎秀, 小林光

日本建築学会計画系論文集　(479)　41-47　1996

DOI： 10.3130/aija.61.41_1 　
対流場，放射場の連成シミュレーションによる冷房室内の温熱環境解析第2報－モンテカルロ法による形態係数の精度の検討と連成計算の複雑形状室内への適用 Peer-reviewed

村上周三, 加藤信介, 崔棟皓, 小林光, 大森敏明

空気調和・衛生工学会論文集　59　(59)　95-104　1995
CURRENT STATUS OF CFD APPLICATION TO AIR-CONDITIONING ENGINEERING Peer-reviewed

Shuzo Murakami, Shinsuke Kato, Hikaru Kobayashi, Futoshi Hanyu

Proceedings of the Pan Pacific Symposium on Building and Urban Environmental Conditioning in Asia　403-426　1995
New Scales for Evaluating Ventilation Efficiency as Affected by Supply and Exhaust Openings Based on Spatial Distribution of Contaminant

Shinsuke Kato, Shuzo Murakami, Hikaru Kobayashi

Proceedings of the 12th International Symposium on Contamination Control　341-348　1994
New Scales for Assessing Contribution of Heat Sources and Sinks to Air and Temperature Distribution in Room Based on Numerical Simulation Peer-reviewed

Hikaru Kobayashi, Shuzo Murakami, Shinsuke Kato

Proceedings of the 12th International Symposium on Contamination Control　333-340　1994
New Scales for Assessing Contribution of Heat Sources and Sinks to Temperature Distributions in Room by Means of Numerical Simulation Peer-reviewed

S. Kato, S. Murakami, H. Kobayashi

Proceedings of the 4th International Conference on Air Distribution in Rooms　539-557　1994
New Scales for Evaluating Ventilation Efficiency as Affected by Supply and Exhaust Openings Based on Spatial Distribution of Contaminant Peer-reviewed

S. Kato, S. Murakami, H. Kobayashi

ASHRAE Proceedings of International Symposium on Room Air Convection and　177-186　1992

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Misc. 39

小規模非密封RI施設の施設改修

遠山翔, 斉藤宏秋, 三輪美沙子, 小林光, 松山成男

日本放射線安全管理学会誌　24　(1)　18-22　2025/06

DOI： 10.11269/jjrsm.24.18 　
新型コロナウイルス感染症対策下における教室の温熱空気環境の実態調査その１仙台市内の中学校における2019年と2020年の夏期の温熱空気環境の比較

高木理恵, 後藤伴延, 菅原正則, 小林光

日本建築学会東北支部研究報告集. 計画系　(84)　19-20　2021/06
Publisher: 日本建築学会
中空糸膜を用いた密閉型湿式デシカント空調システムの開発

村越綾, 小林光, 弥富飛鳥

空気調和・衛生工学会大会学術講演論文集　2016　197-200　2016
Publisher: 公益社団法人空気調和・衛生工学会
DOI： 10.18948/shasetaikai.2016.3.0_197 　

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<p>液体デシカント剤を密閉回路で使用する湿式デシカント空調システムの開発を目指し、中空糸膜を介して液体デシカントと気中の水蒸気の交換を行うデシカントユニットの検討を行っている。本報では、実用条件に近い温湿度範囲で行った除湿・再生実験の結果と、シミュレーションを用いて行った検討について報告する。</p>
Study on Liquid Desiccant System Using Hollow Fiber Membrane

Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan　2015　121-125　2016
Publisher: The Society of Heating,Air-Conditioning&Sanitary Engineers of Japan
DOI： 10.18948/shasetaikai.2015.3.0_121 　
Study on dehumidification and regeneration speed of desiccant rotor, and evaluation of new desiccant material

Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan　2015　165-169　2016
Publisher: The Society of Heating,Air-Conditioning&Sanitary Engineers of Japan
DOI： 10.18948/shasetaikai.2015.3.0_165 　
41515 RECONSTRUCTION & EMPOWERMENT PROJECT FROM 311 DISASTER IN TOHOKU UNIVERSITY AOBAYAMA EAST CAMPUS CONSTRUCTION TOWARD RESILIENT CAMPUS : Part 6/Outline of Zero Energy Toilet Systems regarding zero balance of lighting energy consumption

ISHII Hisashi

Summaries of technical papers of annual meeting　2015　1087-1088　2015/09/04
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
41516 RECONSTRUCTION & EMPOWERMENT PROJECT FROM 311 DISASTER IN TOHOKU UNIVERSITY AOBAYAMA EAST CAMPUS CONSTRUCTION TOWARD RESILIENT CAMPUS : Part 7/Implementation of ZET in the Empirical Location Site

FUJIYAMA mamiko

Summaries of technical papers of annual meeting　2015　1089-1090　2015/09/04
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
40339 Evaluation of impacts of countermeasures against urban warming on cooling load reduction, mitigation of heat island phenomena and adaptation to urban warming : Part 3) Coupled simulation of radiation, conduction and convection and evaluation of the impacts of roadside trees in real town block in Shinbashi area

UCHIDA Taiki

Summaries of technical papers of annual meeting　2015　711-712　2015/09/04
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
41514 RECONSTRUCTION & EMPOWERMENT PROJECT FROM 311 DISASTER IN TOHOKU UNIVERSITY AOBAYAMA EAST CAMPUS CONSTRUCTION TOWARD RESILIENT CAMPUS : Part 5/Total System and Components of ZET: Zero Energy Toilet Environment

ISHIDA Toshikazu

Summaries of technical papers of annual meeting　2015　1085-1086　2015/09/04
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
41633 Development of multiple unit type liquid desiccant air conditioning system using hollow fiber membrane humidity control unit : (Part 2) Study on dehumidification capacity control using simple simulation

MORIYA Koji

Summaries of technical papers of annual meeting　2015　1323-1324　2015/09/04
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
41403 A research study on the actual condition of the a spatial radiation dose rate at a rural house in Namie in Fukushima

NOZAKI Atsuo, KOBAYASHI Hikaru, ICHIJO Yusuke, NISHINA Hisato, NARITA Yasunori, HIJIKATA Yoshio, GOTO Tomonobu, YOSHINO Hiroshi

Summaries of technical papers of annual meeting　2015　843-844　2015/09/04
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
A-17 Research on dehumidification and regeneration speed of dessicant rotor for dessicant air-conditioning

IYATOMI Asuka

(78)　51-52　2015/06/20
Publisher: Architectural Institute of Japan
ISSN： 1345-6695
40451 Evaluation of impacts of countermeasures against urban warming on cooling load reduction, mitigation of heat island phenomena and adaptation to urban warming : Part 1 Concept of the evaluation system and coupled simulation of radiation, conduction and convection

SASAKI Kiyoshi

Summaries of technical papers of annual meeting　2014　943-944　2014/09/12
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
40452 Evaluation of impacts of countermeasures against urban warming on cooling load reduction, mitigation of heat island phenomena and adaptation to urban warming : Part 2) Formulation of evaluation indices and evaluation of the impact of highly reflective material and greening applied to vertical walls

UCHIDA Taiki

Summaries of technical papers of annual meeting　2014　945-946　2014/09/12
Publisher: Architectural Institute of Japan
ISSN： 1883-9363
第22 回電気設備学会賞開発奨励賞超高層対応型太陽光採光システムT-Soleil 100 の開発

Hikaru Kobayashi

The Journal of the Institute of Electrical Installation Engineers of Japan　31　(7)　559-561　2011/07

DOI： 10.14936/ieiej.31.559 　

ISSN： 2188-6946
太陽光採光システム

小林光, 菅原圭子, 市原真希, 山本出

空気調和・衛生工学　85　(8)　611-617　2011
Publisher: 空気調和・衛生工学会
ISSN： 0386-4081
太陽光採光システムの概要と適用事例

小林光

建築設備士　41　(4)　13-16　2009
Publisher: 建築設備技術者協会
ISSN： 0916-2739
建築と一体化した太陽光採光システム

小林光

建築設備と配管工事　47　(11)　36-40　2009
太陽光採光システムの開発

小林光, 藤井浩史

大成建設技術センター報　41　(41)　15　2008
温度依存性を考慮した室内VOCs濃度の長期予測手法の検討・簡易予測モデルの概要及び実験との比較検証

市原真希, 藤村淳一, 市原英樹, 小林光, 樋渡潔

大成建設技術センター報　(39)　18　2006
41589 Study on Radiation Distribution Coefficient for Using Control of Indoor Thermal Environment (Part2) : Application of the Concept of C_<i→j> to Enclosed Space with Natural Convection

SUZUKI Yusuke

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services　2004　1221-1222　2004/07/31
Publisher: Architectural Institute of Japan
ISSN： 1341-450X
41588 Study on Radiation Distribution Coefficient for Using Control of Indoor Thermal Environment (Part1) : New Definition of Re-radiation Ratio and Calculation Method of Radiation Distribution Coefficient

SASAMOTO Taro

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services　2004　1219-1220　2004/07/31
Publisher: Architectural Institute of Japan
ISSN： 1341-450X
4013 室内温熱環境形成寄与率(CRI)を利用した室内温熱環境制御に関する研究 : 放射熱伝達による熱の分配量を評価する放射熱分配係数の改定(環境工学)

笹本太郎, 小林光, 加藤信介, 村上周三, 大森敏明

日本建築学会関東支部研究報告集 I　(74)　559-562　2004/02/28
Publisher: 一般社団法人日本建築学会
ISSN： 1346-4361
エコビレッジ松戸 21世紀に相応しい環境配慮型の集合住宅

小林光

建築環境・省エネルギー機構機関誌IBEC　23　(1)　74-77　2002
Publisher: 建築環境・省エネルギー機構
ISSN： 0389-2638
不完全混合室内における換気効率・温熱環境形成効率評価指標に関する研究(第1報)CFDに基づく局所領域の換気効率評価指標の開発

小林光, 加藤信介, 村上周三

空気調和・衛生工学　72　(3)　247-247　1998/03/05

ISSN： 0386-4081
Study on Evaluation of Ventilation Effectiveness of Occupied Space in Room(part4) : CFD Analysis of Contaminant Concentration Distribution and PFR in Model Room

ITO KAZUHIDE

Techinical Papers of Annual Meeting the Society of Heating,Air-conditioning and Sanitary Engineers of Japan　8　(1)　49-52　1996/08/01
Publisher: The Society of Heating, Air-Conditioning Sanitary Engineers of Japan
DOI： 10.18948/shasetaikai.1996.1.0_49 　
Study on Evaluation of Ventilation Effectiveness of Occupied Space in Room(part 3). Precise Model Experiment of Airflow in Room for Analyzing PFR.

鈴木信夫, 伊藤一秀, 加藤信介, 村上周三, 小林光, 林立也

空気調和・衛生工学会学術講演会講演論文集　1996　(Pt 1)　1996

ISSN： 1880-3806
Study on Evaluation of Ventilation Dffectiveness of Occupied Space in Room(part 2) : Preriminary Analysis of Contamination adistribution and PFR in Model Room

ITO KAZUHIDE, MURAKAMI SHUZO, KATO SHINSUKE, KOBAYASHI HIKARU

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D-2, Environmental engineering II, Heat, moisture, thermal comfort, natural energy, air flow, ventilation, smoke exhaustion, computational fluid dynamics, indoor air quality heating, cooling and air-conditioning heat and cold sources, piping systems application of building services　561-562　1996
Publisher: Architectural Institute of Japan
ISSN： 1341-450X
Lagrangian Dynamic SGS Modelによる２次元角柱周辺流れのLES解析

小林光, 村上周三, 持田灯, カイルD.スクワイヤーズ

生産研究　43-48　1996
Study on Contribution Ratio of Heat Sources/Sinks for Constituting Indoor Climate (Part 3) : Radiation Distribution Coefficient Accounting for Heat Transport with Absorption and Re-radiation on Planes of Enclosed Space

HOBAYASHI Hikaru, MURAKAMI Shuzo, KATO Shinsuke

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D, Environmental engineering　1994　43-44　1994/07/25
Publisher: Architectural Institute of Japan
ISSN： 0915-0145
Dynamic Subgrid-scale Modelに基づくLESによる２次元角柱周辺流れの解析

持田灯, 村上周三, 富永禎秀, 小林光

生産研究　46　(2)　14-20　1994
Field Measurements on Thermal Environment of Hospital Rooms Using Attached-ceiling Supply Air Jet System (part 2) : Radiation Field and Flow Visualizaton

KOBAYASHI HIKARU

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D, Environmental engineering　1993　1587-1588　1993/07/25
Publisher: Architectural Institute of Japan
ISSN： 0915-0145
Field Measurements on Thermal Environment of Hospital Rooms Using Attached-ceiling Supply Air Jet System (part 1) : Effects of Attached Air Jet and Double-Skin Return Air System

TAKAHASHI TAKIO

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D, Environmental engineering　1585-1586　1993
Publisher: Architectural Institute of Japan
ISSN： 0915-0145
Coupled Simulation of Convective and Radiative Heat Transfer in Enclosed Space : (Part6) Simulation of Heat Transfer with Flow Obstacle

CHOI Dongho

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D, Environmental engineering　1992　549-550　1992/08/01
Publisher: Architectural Institute of Japan
ISSN： 0915-0145
18 閉鎖空間内の対流場と放射場の達成シミュレーション(その4) : 室内に障害物がある場合の熱移動解析(環境工学)

崔棟皓, 村上周三, 加藤信介, 大森敏明, 小林光

研究報告集. 計画系　(62)　69-72　1992/01/20
Publisher: 一般社団法人日本建築学会
17 閉鎖空間内の対流場と放射場の達成シミュレーション(その3) : モンテカルロ法による放射計算の検討(環境工学)

小林光, 村上周三, 加藤信介, 大森敏明, 崔棟皓

研究報告集. 計画系　(62)　65-68　1992/01/20
Publisher: 一般社団法人日本建築学会
Study on Evaluation of Venilation Effectiveness of Local Area in Room Part 1 : Coverage-area index of supply and exhaust opening

KOBAYASHI Hikaru

Summaries of technical papers of Annual Meeting Architectural Institute of Japan. D, Environmental engineering　539-540　1992
Publisher: Architectural Institute of Japan
ISSN： 0915-0145
複雑形状室内空間における熱環境場の対流，放射連成シミュレーション

村上周三, 加藤信介, 大森敏明, 崔棟皓, 小林光

生産研究　44　(2)　16-23　1992
米国北西部の全電化高性能住宅における室内環境とエネルギー消費量に関する分析(都市計画系環境工学系)

吉野博, 長友宗重, 小林光

日本建築学会東北支部研究報告集　(54)　131-136　1991/06/22
Publisher: 一般社団法人日本建築学会
ISSN： 1343-4713

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Books and Other Publications 4

サステナブルな住まいを目指して―プロフェッショナルからの提言〈Ｐａｒｔ２〉

住まいと環境東北フォーラム

技報堂出版　2022/06

ISBN: 9784765526326
建築設備の凍結・雪対策計画設計施工の実務の知識

空気調和・衛生工学会

空気調和・衛生工学会,丸善出版 (発売)　2018/03

ISBN: 9784874180662
住まいと人と環境プロフェッショナルからの提言

住まいと環境東北フォーラム

技報堂出版　2015/11

ISBN: 9784765525763
空気調和・衛生工学便覧 14版 3 空気調和設備偏

空気調和・衛生工学会

空気調和・衛生工学会,丸善 (発売)　2010/02

ISBN: 9784874180471

Presentations 1

シミュレーションによる避難所の換気検討ツール開発

小林光, 福田純, 高木秀太

第30回空気シンポジウム『ウイルスと換気対策』　2021/09/06

Industrial Property Rights 24

ルーバ

山田浩嗣, 小林光, シャオチ, 今田茉莉奈

Property Type: Patent
採光装置

小林光, 大木泰祐, 菅原圭子, 横井睦己, 張本和芳, 市原真希

特許6448122

Property Type: Patent

Holder:
除湿材、除湿ロータ、及び、デシカント空調装置

小山繁実, 小林光, 奥崎秀典, 金井文彦

Property Type: Patent
水害防止構造

小林光, 加藤美好, 横井睦己

特許5901017

Property Type: Patent
手術室空調システム

田村健, 井上邦彦, 横井睦己, 龍英夫, 小林光, 樋渡潔

特許5877721

Property Type: Patent
吹出口装置

田中拓也, 横井睦己, 小林光, 梶山隆史, 大木泰祐, 張本和芳

特許5641580

Property Type: Patent
吹出口装置

和手俊明, 小林光, 梶山隆史, 大木泰祐, 張本和芳, 田中拓也

特許5489898

Property Type: Patent
広域・高精度人体検知センサ

小林信郷, 金子輝久, 小林光, 張本和芳, 加藤崇, 清水友理, 渋沢真弘, 関智行, 海老原清, 吉田健一

5308898

Property Type: Patent
採光システム

小林光, 小林信郷, 藤井浩史

特許5253270

Property Type: Patent
パーソナル空調システム及び空調用空気吹出口装置

森山泰行, 梶山隆史, 仁志出博一, 小林光, 山本進, 奥津健治, 張本和芳

5389504

Property Type: Patent
建築物の構成部材

吉川裕亮, 水谷太朗, 小林光, 渡邉智介

4908086

Property Type: Patent
パーソナル空調システム

村田圭介, 小林信郷, 小林光

4654922

Property Type: Patent
信号伝送システム

塚田文哉, 増田潔, 小林光, 安田勝彦

Property Type: Patent
パネルスピーカ

増田潔, 小林光, 塚田文哉, 安田勝彦, 床鍋秀夫, 梅田克彦

特許4148147

Property Type: Patent
音響誘導システム

増田潔, 小林光, 塚田文哉, 安田勝彦

Property Type: Patent
スピーカ機能を有する発光表示パネル及び発光表示装置

増田潔, 小林光, 塚田文哉, 安田勝彦

Property Type: Patent
建物の自然換気システム

宮本敬介, 庄司研, 小名秋人, 小林光

Property Type: Patent
蓄熱式空調システム並びに蓄熱式空調システムの運転方法

高橋淳一, 小林光

4400897

Property Type: Patent
ヒートポンプシステム

高橋淳一, 小林光, 北川寛, 平井仁

Property Type: Patent
建物における空調システム

高橋淳一, 川崎賢哉, 小林光

Property Type: Patent
多機能ヒートポンプシステム

高橋淳一, 川崎賢哉, 小林光, 北川寛, 平井仁

3654017

Property Type: Patent
定温貯蔵倉庫

小林光

Property Type: Patent
水蓄熱槽における熱損失低減機構

小林光, 高橋淳一

Property Type: Patent
簡易空調負荷予測方法

高橋淳一, 小林光

Property Type: Patent

Show all Show first 5

Research Projects 19

発災後10年を経過した原発事故被災地における建築環境に影響する放射能汚染調査

小林光, 野崎淳夫

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(B)

Institution: 東北大学

2023/04 - 2026/03
簡易な湿度管理を目的とする除湿媒体の検討 Competitive

Offer Organization: （公財）日本建築衛生管理教育センター

System: 令和6年度建築物環境衛生管理に関する調査研究助成金

2024/07 - 2025/03
中空糸膜を用いた密閉型湿式デシカント空調システムの開発 Competitive

Offer Organization: （国研）新エネルギー・産業技術総合開発機構（NEDO）

System: 課題設定型産業技術開発費助成金

2023/09 - 2025/03
多様な働き方を想定したオフィス空間に適した昼光利用評価に関する研究 Competitive

Offer Organization: （一財）大成学術財団

System: 2022年度研究助成

2022/04 - 2023/03
Investigation of the depth distribution of radionuclides on the artificial pavement surface and research on its effect on the air dose rate

Offer Organization: Ministry of the Environment

2020/04 - 2023/03
Development of an energization-regeneration desiccant air conditioning system using a conductive polymer as new moisture absorbing material Competitive

Kobayashi Hikaru

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2019/04 - 2023/03

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The purpose of this study was to develop a new desiccant air conditioning system that is expected to contribute to energy conservation in air conditioning. It is characterized by the use of the conductive polymer PEDOT:PSS as a desiccant medium, and its reactivation is done by energization. The following objectives and issues were set to explore the possibility of a system that does not use hot air and is more efficient and controllable than conventional systems. Objective 1: Development of a desiccant element using PEDOT:PSS, and Objective 2: Development of a desiccant rotor regeneration method using conductivity. Subject 1: Development of a desiccant rotor with excellent absorption and desorption performance, Subject 2: Development of an optimal reactivation method using electric current, Subject 3: Investigation of desiccant element shape through experiments and numerical analysis, Subject 4: Investigation of operation method through experiments using an experiment and analysis.
自律型IoTセンサリングシステムによる、屋内外不均一環境場のリアルタイム評価とその応用に関する研究 Competitive

小林光

Offer Organization: （一財）大成学術財団

System: 2019年度研究助成

2019/04 - 2020/03
非結像光学の手法を用いた建築自然採光レンズの開発 Competitive

小林光

Offer Organization: （独）日本学術振興会

System: 学術研究助成基金助成金挑戦的研究（萌芽）

2017/07 - 2020/03
建築環境マイクロバイオームの実態把握による集団感染機構のモニタリング Competitive

加藤信介

Offer Organization: （独）日本学術振興会

System: 科学研究費補助金挑戦的研究（開拓）

2017/07 - 2020/03
Proposal of a prediction method of outdoor thermal environment by using a new framework considering the total heat stress of walking pedestrians

Mochida Akashi, GOTO tomonobu, KOBAYASHI hikaru, MOTOE masashige

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2016/04/01 - 2019/03/31

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First, simultaneous measurements of outdoor thermal environments and physiological responses of walking pedestrians were conducted and the relationships between the thermal environments and the physiological responses were determined. Secondly, the validation of the human thermoregulation models was performed in order to select the suitable models for heatstroke and thermal comfort evaluation of walking pedestrians.Lastly, a new prediction method of outdoor thermal environments based on the viewpoint of “suppressing heat stress increase of walking pedestrians to keep thermal environment in outdoor space within acceptable range” was developed by using these models and coupled simulations of radiation, conduction and convection. Based on this method, a study of the most suitable arrangement of cool spots and the evaluation of countermeasures against urban warming in a certain street in the Shimbashi area was conducted.
原発事故後の建築のための居住空間内γ線空間線量率予測方法の確立 Competitive

System: Grant-in-Aid for Scientific Research

2016/04 - 2019/03
多様な建築環境計測に資する有線多点計測システムの開発 Competitive

小林光

Offer Organization: （公財）LIXIL住生活財団

System: 平成29年度研究助成（調査研究助成）

2017/12 - 2018/12
Proposal of optimal environmental design methods for prevention of cerebrovascular disease

Hiroshi Yoshino

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2014/04/01 - 2017/03/31

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In order to clarify the association between the indoor environment of residential buildings and cerebrovascular disease, an epidemiological survey of approximately 200 elderly persons living in Yamagata Prefecture of Japan was conducted. The survey was divided into three phases. From first phase, an epidemiological survey of 188 elderly persons living in three areas that have different rates of death due to cerebrovascular disease was conducted. Results indicate that poor quality of the indoor environment during winter could increase the risk of cerebrovascular disease.The results obtained from the final phase, which included field measurements of indoor temperatures and blood pressure of 30 elderly persons during one year. Results indicate that in most houses, that the indoor temperature at daybreak can be as low as the outdoor temperature. The systolic blood pressure of elderly persons was shown to be positively associated with exposure to temperatures lower than 15°C.
液体乾燥媒体と透湿膜を用いた超小型・高性能な空調用除湿システムの開発 Competitive

System: Grant-in-Aid for Scientific Research

2015/04 - 2017/03
潜熱蓄熱材（PCM）を用いた自然エネルギー利用による多段階室温管理技術の開発 Competitive

System: Grant-in-Aid for Promotion of Private Scientific Research

2015/12 - 2016/12
空気質ディマンド制御による高効率全熱交換型換気システムの開発

野村幸司, 伊藤一秀, 林徹夫, 小林光

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(C)

Institution: 九州大学

2014/04/01 - 2015/03/31

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本研究は室内換気負荷と局所領域空気質の最適化を達成するディマンド制御を組み込んだ全熱交換型換気システムの開発に取り組むもので，環境試験室内での全熱交換エレメントの性能試験，CFD･エネルギーシミュレーションを中心とした数値解析による性能検討，大学研究室の居室空間を対象とした実測調査，の各手法を相互補完的に併用して研究を進める．本研究は当初3年計画であったが，効率的に研究を推進して，本年度1年でほぼ予定していた研究開発を完了させた．具体的な成果を以下に列挙する． (1)リアルタイム人員密度計測法の開発：時間変動する人員密度に対応した換気量調整を行うために，入退室ドア部(入り口)に設置するドップラーセンサを利用したリアルタイムでの人員密度計測法を開発すると共に，フィールドで性能試験を実施した． (2)CO2センシングによるデマンド制御アルゴリズムの開発：リアルタイム人員密度計測データの他，室内局所領域のCO2濃度を入力とした導入外気量の調整法，即ち居住域平均濃度を対象としたデマンド制御アルゴリズムを開発した． (3)換気効率を考慮したディマンド制御を組み込んだ全熱交換型換気システムの開発：室内に形成されるCO2の不均一濃度分布を数値流体力学CFDによる数値解析によって求め，その結果を基に室内の局所領域(居住域，タスク域等)換気性状を，基準化居住域濃度の換気効率指標で定量評価し，代表的な境界条件の下での換気効率解析結果をデータベース化すると共に，CO2センサの最適配置，局所領域濃度レベル，全熱交換器の熱交換効率最適化を総合的に考慮した換気システムを開発し，連成数値解析ならびに現場実測で性能検証を実施した．
Development of a module of tree canopy model for prediction, assessment and design of urban environment using CFD and BIM

MOCHIDA Akashi, TESHIROGI Jun, KOBAYASHI Hikaru

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2012/04/01 - 2015/03/31

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This study aimed to develop a new module of tree canopy model for CFD prediction of urban environment. Firstly, field observations of turbulent flow fields in and around a group of trees were carried out and spatial variation of turbulent length scale was examined. Then, new evaluation methods of the turbulent length scale using LES data were developed to revise model coefficients of canopy model. Next, LES analyses of the wind flow within roughness elements were performed to investigate the influence of roughness configurations on turbulent characteristics within the canopy layer. Canopy models previously proposed based on k-ε model to reproduce the effect of roughness configurations on flow fields were examined and revised by using the turbulent length scale data provided by the LES. Finally, wind environments in an agricultural area located 20km south from Sendai were predicted to investigate the effects of new windbreak forest by using OpenFOAM with the revised tree canopy model.
建築空間の太陽光利用を容易にする固定式太陽光採光ミラーの開発 Competitive

System: Grant-in-Aid for Scientific Research

2013/04 - 2015/03
液体除湿回路による実建物に容易に適用できるデシカント空調システムの開発 Competitive

小林光

Offer Organization: （公財）LIXIL住生活財団

System: 平成25年度調査研究助成

2013/12 - 2014/12

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Works 2

大きな地形を背負う環境住宅

手島浩之, 小林光

2020/12/01 -

Type: Architectural work
CLTモデル実証棟

2018/01/31 -

Type: Architectural work

Social Activities 5

空気調和衛生工学会プライマリ技術者研修

2020/10 - Present
空気調和衛生工学会スタートアップ技術者研修

2020/09/29 - Present

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空調設計講師東北地域の空調設備業界新人向け講義、8コマを担当。資料作成および講義を実施。
空気調和衛生工学会初級技術者研修

2015/04/23 - 2019/10/24

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空調設計講師東北地域の空調設備業界新人向け講義、１０コマを担当。資料作成および講義を実施。
東北大学イノベーションフェア2014

2014/12/04 -

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平成２６年１２月４日（木）仙台国際センターにて開催された東北大学イノベーションフェアに出展
出張授業

2013/12 -

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仙台第二高等学校における出張授業

Other 2

潜熱蓄熱材（PCM）を用いた自然エネルギー利用による多段階室温管理技術の開発

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施設園芸に於いて暖房エネルギーを削減する方法にはハウスの保温性能向上と太陽熱の有効利用がある。これらは従来より行われているが、ハウス内の作物には１日を通じた適温の周期があり、高温になり過ぎれば換気し、低温になれば暖房を行う。この適温の周期を自然熱で実現するために、建築分野で用いる潜熱蓄熱技術を適用し、太陽熱を適切な温度で蓄え、有効に利用する方法の開発を目指す。
液体除湿回路による実建物に容易に適用できるデシカント空調システムの開発

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これまで個体ロータによる除湿方式が一般的であり、既に実用化の進む次デシカント空調システムについて、従来のロータによるシステムを液体デシカントによる液体除湿回路を用いた除湿ユニットに置き換えることで、除湿効率向上及び機器サイズ圧縮を実現しようとする研究。